“And what are Slytherin and Hufflepuff?”
“School houses. There’s four. Everyone says Hufflepuff are a lot o’ duffers, but —”
“I bet I’m in Hufflepuff,” said Harry gloomily.
“Better Hufflepuff than Slytherin,” said Hagrid darkly. “There’s not a single witch or wizard who went bad who wasn’t in Slytherin. You-Know-Who was one.”